Note: Descriptions are shown in the official language in which they were submitted.
~93/217~ C4~i` P~U93/0~187
~S~1I1g I~plem~t A~s~ and ~ethod"
. .
Thi~ i~vent:Lon relat~ to a seediRg ~plem~t a~ nbly and
m~th~d which ~ particular, but not ~xclu~i~re, utility in
~eedi~g pad~k~ for ~r~p produc~ion ha~ g ~hallow cla~
80iL18 or r~on-wetting ~oils whi~h have a ~hard pan" layer of
~o~l below the ~urface.
UH~rd pan~ ~oil~ occur in many of the crop produ~ g areas
o~ Australia where f ine, non-wettiTIsF sand g~t~ compac~d
over time to form E{ harcl layer of compag~ted 80il
approximately three illches below ~he 13ur~ac~ of th~ ~oil
d: which Q~erally i8 two to three inc:h~ t~ick. This
lay~r can be~:om~ o hard that it do~ t allow root;~ of
he ~:re~p to penetrate through to th~ s~il :b~eath a~d ~hus
ends t~ i~hibit deep root~d crop growth. A ~imilar
probl ari~e~ with ~h~llow clay soil whi~h al80 occur i~
~y c~op producing~ area~ ~throughout :the world..
ord-r~ to break~p ~his Hhard pan" layer; it i~ u~ual for
far~ers to u~e~ agricu~tu~al: i~pleme~t~ for de~p rippillg of
the ~oil prior~ t o or iIl ~o~junction with ~ee~
O~e p~:o~lem ~ enc:ou~tered with preYiou~ d~ep rippi~g
techniques i~ that th~y generally c:aus~ ~uch di~rup~ion to
th~: tQp ~ail a~d~generally r~ult 1~ a te~de~cy or 'ihard
parlh or clay 23e~Ilt8~it5~ be lifted o~to the surfacè o~ th~
80il , ~ubse~[uently~ au~ing ~ealing over o:E the ~3urace
which form~ a hard~crust through which ~the plant cannot
pe~et~ate.
~ ~ .
With the increased 5en8ititrity of farmer~ to ~oil erosion
:~::
213 ~ 1~46
W~93/21~S4 -PCEl~U93/~
.
-- 2. --
probl~m~" th~3~e ~ e~d~ncy ~ m;rimi~2 ~rl~g Q:E the
57rou~d ev~ area~ wher~ "~ard pa~" o~ sha~;low cl~y ~o~
are ~o~ a ~r~ t~,~. iD r~csll~ E;~8& ~here is
~ m~c~ ater use m~de of ch~mic~ls t~ erad~cat~ or cut
back o~ the prol~f~ratio~ ~cl regener~t~o~ o~ ~e~d~Ft
~ætead; of rely~ng ~po~ onven~ional w~xking back o~
paddocks wi~h animal grazi~g or cultiva~ o:E ~h~ ~ame;
X13w~rt with inc~eE~i3ec~ enYiromcelrta~ awa~e~ , th~ wide
~px~ad U8~ o:E chem~ca}~ l~as falle~ ou~ of fa~four a~d
~nde~d, ~he~re i6 a belie:E ~ngst ~he :E~nn}ng co~mnun~y
tha~ tl~e uEe o$ pre-emergent che~Lcal~ :~or 8~;0pping weed
re~erle~ation has ~ terlou~ :e~ect upon ~he crop~
In rec:ent ti:mas~, ~mproved ~ ing a~d 80Wi~l~. tec~i~ues
ha~e. beeIl adopted to: provide ~fo~ better crop ~o~rth and for
more ef~icie~t Ut~L. ation o.~ fe~:lliser~ One of th~
techni~ue6 ig known a~ deep ~ diD~/~. ~hi~:~ e~Be~ially
~vol~e~ depo~ g ~ti~ er at a~pre~c:r~bec~ dep1~h be~ow
the ~eed 80 ~ha~ as~ t~ seed ~g=ate~r all opp~rtunity i~
pr~d ~ for ~ :COQ~ ~h tc~ d~velop a~l~ e~li~h ~elf
efore ~e~ch~g~;h-e ~i~serr~hich othervFise ~bur~" ne~r
r~ot: gro h d~ro~ g~ ~he ~ eed. T~ te~ aue i8 a ~Fa~t
improv~Qe~t upt~ e~: :prior .a~ which. fi:hllpl~ in~rolved
dopofiitl~ fe~tilise~:~concurr~y~witll ~:h~ ~e~, re~ultiTlg
~;S~a~ w~tage~ ~f~ both i~ar~ er ~;a~d ge~d~
th~ti~n~ng t;~e ~DVe~ent a~ ved ~y adopti~g d~ep
b~ingr . pre~ellt p~an~ing ~d seediE~ 3c~ique~; for crop
growinç~ ~ill ~vo~v~ ~he ba~ic prin~:~pl~ Df forming a
re~atlhre~ d:eeE fu~:rQ~ ~ ~hich fer~ er i~ depo~i~e~,
co~er~ng thi~ pa~ally~.w~th ~oil ~nd ~he~ depo~iting a
}~e o s~e~ i~ à slngl~: xo~ di~ect~ ~o~e the ~er~ er.
~ccord~gly,. a rati~ of ~eed tc) :Eertili er ~ t~e 3rder of
1:~ is u ed. A di~ad~a~t~ge of ~ig~ however~ ia ~hat ~he
er~:iliser caD oi~eIl provide q~i~e ~ ~ati6facto~y sourc~e o~
~utritic~ to more thaIi o~ ~eed at a: t~e, particularly
'.
wo g3~2l~S4 2 1 3 ~ 6 4 ~ ~A~9~/Q~187
w;~h the wide ~pre~d use of ~uper-pho~phate ~hich proYides
~a ~r@ry cor~celltrated sQurce of nutritit)n for plank$.
Th~3refore p~en~ si~gle rc~w 80WiD.g m~hod~ ~o not provide
i~or e~fi~iQn~ usag~ of ~ er.
In addition, i21 order to maximise yield, lt :t~as b~e~
~omtnonplace to dispose the rows of 8~ed and the i~di~rid~al
se~ds themselvss with~ a rc~w, relatively ~lo~ely.
di~advantage of thi~ i8 that relative clo e spacing ~f
~eeds a~ct~ plant stooling, wb.ereby it has b~en fc~und
tha~ the mor~ clo~ely planted i8 the ~ed, the les~er the
nu~er of ~tools produc~d on ~ach pla~t duri~g growthO
In o~der ~o acco~aodate both fioil ero~orl and ehemical
u~aga con~ideratio~6, it i~ an object o o~e asp~3~t of the
preseIlt i~v~n~ion to provide a method of seediIlg ~ C:roI?
whic:h ~tigate~ Boil erosion a~d ~hances ~rop root growth/
par icular where there are ~hard p~" or ~hallow clay
oil~ h~e~nore i~ i8 aTl obj~c:t for ~h~ me~hod to
~ti~ate or: ~ di~pe~e: with the use of a pre-e~n~rg~nt
mical for s~ppi~g w~ed r~general:ion after the initial
~eding stage.
It iR an obje~t c~f a~a~her asp~¢t of the ~pre~ent inverltio~
to p~ovide ~ se~ding ~plem~3nt as~s~ly ~hich ~:a~ be u~ed
i~ th~ afo~mentio~ed method.
An o~j~ct of eve~ further aspect~ of the inve~tio~ î~volve
providi~g a~ improved ~eeding method aTld p~anti~g ~ystem,
which ac:hieve~ re e~ficient utili~ation Qf- fertiliser a~d
the ability to achiev~ greater plant stooling.
In ors~er to achieve at least ~ome of the aforemen~ioned
object~, certain aspect6 of the present invention
P~AV ~i 5 J (3 ~ I ~ f
~13 i~ 6 il ~ RE~::EI~E~ O 8 APR t994
contemplate cutting the ground initially to ~orm an
incision by mean~ of either a cutting wheel or tyne and
utilisirlg a deep ripping implement which follows the ~rack
of the incision to deeply penetrate the ground cau~ing
minimal surface disturba~ce and consequently providing for
deep band seeding and fertilising to be effected. A
problem encountered with this technîque, however,
particularly in "hard pan" soils, i~ that it has been
difficult to maintain an op~imum and con~tant depth for
deep ripping and banding of the seed and fertiliser due to
ob~tacles encountered by the cutting wheel or tyne and~or
deep ripping implement. ~~
Consequently~ it is a further and preferred object of
certain a~pects of the present invention to pro~ide methods
a~d apparat~s where appropriate which can alleviat0 some or
all of the aforementioned disadvantage~ as~ociated with the
u~e of previous methods and implements for seeding
purposes.
:
In accorda~ce with one aspect of the pre~ent in~ention,
there i~ provided a method for seeding a crop compri~ing:-
continuously cutting an inci6ion through the ~urface of theground for a deep ripping Lmplement to traver~e;
con~inuously deep ripping the ground along ~aid inci~ion
below the 6urface of the yround, ~aid d~ep ripping causing
minimal ~urface disturbance;
continuou~ly depo~iting seed in a furrow formed below the
surface within the deeply rippsd ground; and
continuously covering ~aid furrow after the depo~iting of
seed therein;
.
;
~D~;D
U
W093l~17~4 ~13 ~f~ G 4 6 rcr/~u~3~oDl~7
. . . ~
-- 5 --
wherein said deep ripping, depositi~g o~ seed a~ co~ering
i~ per~ormed ~ontinuousl~ along ~he entire longitudinal
~tont of said incision and at sub~tantially relatively
c~stant depths with respect to ~ach othe~, at lea~t during
the kime that ~aid ~uttin~ of ~aid incision and ~aid deep
ripping i8 caused to temporarily fluctuate in depth due to
minor obstacles or obs~ruction~ bei~g enc~untered during
~aid cutting.
Preferably, the relative angular po~ition of the deep
ripping i8 altered in re6po~se to said tempo~a~y
fluct~ations in depth 80 as to mitigate the lifting effect
of ~eep ripping closer to the ~urface of the ground.
.
Preferably, ~aid method includes the step of continuously
depositing fertiliser :prQxLmate to ~he ~ottom of said
inciBioIl immediately; ~;follo~ing the deep ripping of the
ground t~erealong~d~ formins~ said furrow at a level above
the i~cision bottom, so as to deep ba~d said seed.
Preferably, ~the method inelude~:forFing said furrow
eparateIy~ of ~said:deep ripping.~Pref~rably,-~aid method
clude~forming a~pair of~6aid furrow~, one at either ~ide
of ~said inoi~ion,~each:of;~sa~id furrows bei~g respectively
covered:a~ter~the~delpD~iting of the~ eed therei~ In this
manner the one~ ine~:of:~ deposited ertiliser serve~ to
ertilige the~two lines~of deposited ~eed, the~e~y reducing
the:amount of fertitiser required relative to the amount of
eed. Furthermore, the p1urality of rows of ~ee~ enable~
the ;~ effective~ concentratiQn~ of s~ed to be reduced,
rffsulting in~ ipcrea~ed ~spacing ~:between the seed which
produce~ ~uch improved~st301ing.
Preferably, said method includes formins~ a central ridge of
80il betweeIl the :c~overed furrows. In this manner, water is
~ubse~uently ~ channelled into the covered furrow~ by the
P~r~ S /' U ~ 1 8 7
2.~ 3 !~ 5 ~1 ~ R~ Ei3 ~ 8 APR 199~
.
-- 6
efect of the ridge r aiding germination of the 6eed which
is e~pecially advantageous for non-w~tting ~oils.
Preferably, said deep ripping, depositing of seed and
covering i5 rapidly ceased upon encountering a major
ob~tacle during said cutting after the entire longitudinal
extent of said incision is deeply ripped, said fuxrow i~
formed, deposited with seed and covered.
In accordancé with another aspect of the present invention f
there is provided a ~eeding implement assembly for mounting
to a travelling f rame ~o as to engage the ground traverse~~
by the travelling ~rame, ~aid as~embly comprising:-
a linkage for connection to the travelling frame;
a tyne for being directly connected to said li~kage saidt~ne having a deep ripping point disposed at the base of
the tyne and a ground cutting mean~ for cutting an incision
through the ground for the tyne to traverse;
a seed discharge means for mounting to the rear of said
t~ne;
sai~ linkage being adapted to normally ~uspend said tyne
and 6aid s~ed: discharge means in a prescribed operative
working po~ition with re~pect ~o the travelling frame and
the ground,: 80 that there ~exi~t~ a working spatial
relation~hip between ~aid tyne and ~eed discharge means;
and
...
bia~ing mean~ for biasing ~aid tyne into ~aid prePcribed
operative working positio~;
~ A~ ~ 3 J U U I ~ ~
? 2 1 3 -~. Ii 4. 6
-- 7 --
wherein ~aid linkage includes compen6ating means for uRe in
clearing an obstacle obstructing the travel of said ground
cutting means, said compe~ating means being adapted to
elevate said tyne and said seed di~charge means so as to
clear the obstacle whilst simultaneously substantially.
maintaining the relative ~aid prescribed operative working
position between said tyne and said eed discharge mean~
until at least ~aid ~yne is impeded from maintaining ~aid
working position by the obstacle.
Preferably, the relative angular position of said point i~
altered in response to ~elevation of said tyne so as ta-
mitigate the lifting effect of deep ripping caused by said
point as the position of said point nears the surface of
the ground.
.
Preferably, said compensating mean is formed by said
linkage~being constructed in the form~of an off6et parallel
linkage as~embly,~ comprising a pair of depending arms
offset from the~ parallel with ~espect to each other,
whereby the fir~t arm~i pi~otally connected at one end to
the frame: and at:~:the:other end~to the front of said tyne,
and the~seco~d :arm~: i8~:pi~otally:: ~co~ected at one end
thereof to ~the~frame~rearwardly in~Qpaced~relation to the
pivot~l axi~ of said:one end;of ~aid:first arm, a~d at the
other end:of:s~ai~:~second arm to said~tyn~ rearwardly and i~
spaced:relation to:the pivotal axi~:of ~aid: other end of
said :fir t arm,:~ such~that the pivotal axis of said other
end of ~aid second arm is more elevated and closer spaced
to said pi~o~al ~axis of the other end of said fir~t arm
than: i8 the corresponding relationship betwéen the pivotal
axes of the one ends:of said ~irst a~d ~econd arm~.
: ~ . .
Preferably, :~aid cu~ g méan~ comprises a no~e portion
: projecting anteriorly rrom the front of ~aid tyne for
~E~JA~
~ p~f (ir)~l
l~EGE~E~ ~ B APR ~9g4
2 1 3 ~ 6 4 S
-- 8
cutting throush the ground.
Preferably, said nose i8 planar and is provided with a
leading rectilinear cUtting edge sloped rearwardly from the
bottom thereof.
By this arrangement, the tyne is able to slice through the
ground and lift any surface material free from the grcund
enabling the material to flow around the front, dispo~ing
with the need for a cutting wheel.
Preferably, the seeding implement a~sembly includes ~
fertili~er discharge means interposed between said tyne and
s~id ~eed discharge means so that fertili~er can be
depo~i~ed into the incision formed by said tyne immediately
behind the point of said: tyne.
Preferably/ the s:eeding~ Lmplement assembly include~ a
tra~ling furrowing means for opening up the ground behind
said tyne to form a furrow in which s~ed may be deposited
at a level above the incision bottom, and covering mean~
disposed behind s~id:furrowing means to cover said seed
~depo ited into the~ furrow.
:
Preferably, a ~pair of: ~aid furrowing means are di~po~ed
either side and rearwardly of ~aid ~yne for forming a
furrow on each ~ide of said tyne, and a corresponding pair
o~ said covering; means are provided for covering said
furrows.
Preferably, said pair of covering mean~ are arranged to
deflect covering soil for said~furrow6 ~o a~ to for~ a
central~ ridge of oll ~between the furrows additional to
co~ering said furrow~.
Preferably, said biasing means compri~es a pair of springs
respectively connected at one of their ends to the frame
and at the other of their e~d~ to the re~pective arms of
A~ENDBD ~Er
~E~JAU
WO ~3/2175~ 6 ~ 6 P~/~
~ai~ kag~ be~weell th2 oppo~ing end~ of said arm~.
t:n acco~dance wi~h a further aspect of th* pr98e~1t
in~r0~ion, ther~ i~ pro-rided a m~thod for ~aeding a crop
mpri~i~g:
de~po~iti~g fertiliser at a fir~t pre~cribed level in a
$ir~ e beneath the surface of the grouTld; and
depo~it~ng seed in second lines at a ~eco~d prescribed
le~el above the first pr~s~cribed level, .o~e said
seco~ line being di~posed laterally to one s~de of
~aid first: line a~d the other said ~e~ d lîne being
dispos~3d laterally ~o the other side ~f said fir~t
lin~.
Pr~er~ly, ~he method includes fc:r~u~g a central ridge
aloIlg t~e l3ur~ace of the grou~d betw~en the ~econd line~.
accordance wit~ a~a~her aspect of ~he prese~ in~rentio~,
there i~ provided a pl~nti~g system ~:ompri~ g:
a li~e :~:of~ fer~iliBer~ disposed at a ~ir~t pre~cribed
leve} ben~3ath ~he Rurface of the ground;
a pair ~o~:~ lines. o ~ ~ seed di~po~e~d a~ a ~co~d
pr~scribed~ level above ;the fir~t pre~cribed level~ #0
: that one of ~h~ lineB of ~eed i~: di~pos~d la~erally ~o
c~ sid~ ~f the ~ e of fer~iliser ~nd the other o~
the line~ af ~eed i~ dispo~ed laterally ~o the ot~er
~de ~f the li~e ~ fe~iliRer.
~: :
Pre~erably, a central ridge of ~oil i8 disposed b~tween
fiaid furrow~ to cha~nel water into the furrow
The lnventio~ wil 1 be better understood in the light ~f the
` .
wo 93~17~4 ~ 1 3 ~ G 4 1~ pcr/Au93~
.
i~o~l~ing de~cr~p~ion ~ tW~ 8pl~ fiC em~dimen~:8 I;~iere~of.
~e descripi:io~ i~ m~sde ~it~ referen¢e ~o t~e a~ccsmpan~ g ,p
dX~i~lg8, ~her~
s
P'~gure 1 ~8 n ~ide. ele~.ra~io~ of a ~d~nig ~plement
asE~e~bly dispo~ed i~ ~ts ~o ~ all~ op~a~i~re ~o~king
. p~it~on ~it~ respe ~ to the tra~ ng frame and ~e
: ground i~ a~or~anc~ wi~h the first emboaim~nt;
.
.
Fislu:re 2 is a s~m~la~ ~rie~F ~o fi~ure 1 8h:0~ing a
partia~ly retracte~ position of ~e ~emb~y where~y
the cutt~llg~wheel is~marg~a~ly ele~r~ted ~o overcome a
mino~ ~tacle whilst the tyne and ~eed discharge
mean~ subs~antsally~ maintaLn ~heir prescr~bed
ope~tiYe wor~~g ~s11;ion,
Figure ~3 i~a;~ide elev~tion o~ ~he ~em~ly from the
oppo6i~e~:~ida~ t~ hat show~ a~ ~igure ~ o~ the
rawl~g~f~:a~ howing~ ~he~ a~s~ly i~ ~tg maxlmum
retractéd~:;po&~io.~ wdth:both~the c~tting wheel iand
tyne~:ele~ate~: from~ ~e~ g~oun~ as.wou~d arise when
en ~ ~ a~immo~able~ob~tacIe;
Figure;~4;~ an~e~d view of~igur~ 1 with the ~ub~e
guard~removed;
Figure ~ i&~a~ide elevat~o~ o~ a ~eedi~g ~ pleme~
d~spofied~ In~it~ormalty oper~ti~ worki~g po~itio~
:wit~ r~spe~ko~the t~avelling frame a~d the gxound in
a~co~d. ~ wi~h the~.second~embodiment,
Figure G~is~a~Lm~lar ~iew to ~ ffgure 1 howi~g the
sse~bly ih ~ts mR~mum:retracted posit~on with b~th
the ty~e~:and the seed discharge means eleva~ed from
he ground a ~ would ari~e ~hen encountering a
r~l~ti~ely immovable obstacle;
. . WO Q3/21754 ~ 1 3 ~ 6 ~ 6 P~/AU~3/W187
~i~e 7 i~ a front e~d vi~w of ~h~ ~eedins~ i~pleme~t
aa~ y as Rhc~w~ in ~igure 5 of t~s draw~ng~ with the
spri~gs r~3mo~ed;
Figur~ a r~ar e~d view of the ~di~g implement
a~s~ly a~ ~hown in figure 5 of the drawings;
~igure 9 i~ a ~ide elevatio~ of the ~eedin~ impleme~t
a88embl~ with th~ linkage and travelling frame
rem~Ted, bu~ ~o~i~g the seed di~charge means in more
detail with the eeding and fertili~er boot~ attach~d
t~reto;
Fig~re 10 i~ a per~peoti~re view e~ the tyne a~d geed
di~chaxge m~ans~:of the se~ding implement ~8~embly in
accordance with the cond embodiment;
igure 11 i ~ a p~r~pective ~ w o~ the 8UppO~ pla~
for the ~eed~ disch~rge me~ans;
,
:
Figure ~12 i~ a re~lr top ~riew of the ~uppor~ plEIte
own i~ ure~: il o. th~ ~awi~
Figure 13 ~ i8: ~ an Imd~rside; vie~ of the ~uppor~: plate
sh~ iguro~ ~11 of the~ d;rawings,
Figure 14~ a rear:end undexsi~le view of th~ ~uppor~
plate shown in fi~ure 11 OI the d~awings; ~d
Figure ~5 i8 a~ cro~s-sectional gro~nd profi~e t~ken
acrQ~s a ~portiQn~: of ground ~w~ich ha~ bee~ ~own u ing
ths method ~ and th~ see~ding impleme~t a~ee~l~
de~cri~ed ~n~ the second embodiment, which ~hows t~e
r~lat z ve po~itioni~g of the covered furrows, the
cer~tral ridge a~d the ~own ~eed and f~rtili6er.
.
~WQ g3/217S~ ~ 13 ~ 6 PC~IAU93/~
he :l~ir~t ~d~t i~ ~re~ec~ towards ~ see~ing
i~ple~ent a~ y tl wh~ch i~ o~e oî a ~k o~ ~u~
as~q~lie~ adapted $o be mou~ a tra~el~ fra~e (~t
~ho~L) wl~ch ~ ed a~ g ~he gro~d be~ind a pxime~ver
~no~ ~ accordlmce with con~renti.~nal fa ng
pract~Ge a~d wi~ e d~e~r~ w~h refereIlce to Figures
~ 4.
:; T~ aasernbly 1~ i 6 E;ll~pended~ ~ouDt~ ~ed bax 13
.
e~tendi~g longitlid~a:lly of ~he ~rame ~rit~ respect ~o. the
i~teIld~d c~irec~ ; of tra~Tel of th~ frame.
~: ~T~e ~lE;8elliE~ly ~en~ral~ly co~pri.ae~ a car~i:age 15~u~pe~de~
elc~w the ~ar 13~ m~a~s: Qî ~a l~nkag~ mpr~ a pair
o~ rs~ arms::1~a ~:;apai~o~:~ec~ ,d antl& 17~, a grou~d
`~ : : : ` :
engaging~ ~i~g :~wheel- 1~, a deep ripping ty~e 21~ a.
E~ i6~ Bd~r~mea~:s 23~ a seed~i~a~g~ means ~f
bias~g mean~ 2~ rE;i}i~g covering w~e~ 29~
The carriage~ l5~ ectiv~y i~ t~e i~or~ of -an in~erted
shap~:chalmel~men~er~the fro~t bot~o~ co;r~er~ l~a of
w ~ c~ ~are~truncatèd and ~he botto~tra~ g edg~D of w~ich
are.forme~:wit~`~a~p~ Qf ~ids 31, ~e a~ e1ther slde ~or
resting opon t~surfa~e~of t~e gro~ d.
~he c~tting w~ee~ 19 is rot~tab~y ~ounted t~w~r~ the
bottom ~f th~ carriage tS a~out:~ cen~ral ax~s 33 e~tend~g
tr~n~er~el~o~;~ è;~carriag~:~nd ~oin~iden~ wi~h an axle: 35
upo~l w~i~ch t3~Le~hee~ mo~nted.~ e cutti~ ~rhe~1 19 ha~
a ~--~haped edge ~ 6ection ~stead oi~ ~ co~Y n~ioll~l t~in
whee 1 80 tha~: t~ tti~g whe~ ut thro~gh the surface
: . .
~: : of the ground m~ n~:a deep in~i&io~ w~ich can be ~sed a5 a
::
u~ro~ for ~ub~equent ~eeding in s.tubbl~ covered paddocks
w~er~ a ~olTowing ty~e cannot be u~ed~ ~ the pre~e~t
:
.
~ ` , ' . ' ..
W~93/21754 PCT/~Ug3/~5187
~3 ~ ~46
- 13 -
embQdiment, howe~er, whera the a88embly has partieular
utility for ~hard pa~ 80il8 whieh regui~e deep rippi~g,
the ~utting wheel 19 i8 ad~pted to cut thr~ugh the ~urfaee
of the ground 60 as to ~orm an ineision along whieh the
ty~e 21 may ~ub~equently pa~s through without unduly
di~turbi~g the ~urfaee of the ground a~d thus minimising
the likelihood of soil eroeion.
The front of the earriage has a stubble guard 37 mounted
thereto to defle~t mînor obstacle6 such a6 twig~ and
stubble a~ay from the eutting wheel 19.
The linkage 17 is arrang~d 80 that the pair of first arm~
17a are pîvotal}y mounted at their upper end ~o either side
of tha ~ar 13 ~ d their lower ends to either side o~ the
earriage 15, 80 that~the pivotal axi8 of t~e lower end of
the arm~ is eQineident~with the eentral axi~ 33 of the
eutting wheel. ;The:pair of seeond arm~ 17b are relativ~ly
d~spo~d with:re~pe~t: to the fir~t arm~, ~o that the first
and second:arm~ form~an o$fse~parall~ lin~age arra~gement
as shQwn in~the drawings. The upper ends of ~he sec~nd
arms are 6imi1arly~:pivotally: moun~ed to the bar 13 a* a
rearwardly~spaced~p~sition relati~e to th~ ~irst~ a~s 17a
and ~:the ~lower~ end6 o the second~arms 17b are pi~4tally
~o~ted t~ the carr~age 15~, but in6tead of being di~posed
to either side~of~he~ carria~e, the low~r end~ ~f ~he arm~
are~joined together~to bé~pi~otally mounted ~ide of the
carriage 15 between~the in~er;side6 thereof. Th~ pivota1
axis:39 of .the lower end of the se~ond arms 17b i8
imilarly rearw~r~ly: ~spaced : :with re~pect to the.
correspo~ding:pivota~:~axi6 of the fir~t arms 17a, bu~ in
contrast:to the relat~Ye dispo6ition of th~ pivotal axes of
the upper ~nds of the first and seco~d arms, the pivotal
axes of the low~ ends of the ~irst and second arm~ are
closer spaced a~d furthermore the pivotal axis 39 of the
~econd arms 17b i8 marginally elé~ated ~n the carriage 15
WOg3/21754 ~13~
-- 14 .--
re p~c:t kc t~ c~rr~ rli~g ~i~ro$a~ axi of the :Eir~t
a~s w~i~h ~8 coinc~d~ wi~h t~e ce~ral ~is 33~
-
~e t^~ ~ :LS i%~ mounted. ~ th~ seco~d arms ~7b
l~etween th~ lower end~ thereo~ ~o ~E~ to be capab~ of
p~v~tal :~ov~Ilt i~ coIliuDctior~ with ~h;e ~econd ~m~
rel~:ti~re ~c~ the c:~rriage 15, ~?he ty~le ~ ch2~acteri~ed
1~ haYiIlg a s~aDk portio~ of a n~ raIl~ver~e e~e~ of
margi~ally le~;se~ dime~8ic~ thaI~ the corre8p~D;ding
tra~sv~rse eætex~t o~ n~ wheel 19, a~ fihO~l in
fig~ Z o~ the drilwing&r a~d ha:s ~ l~rger lo~g~udinal
e~e~rt ~ the di~ec ion oi~ tr~vel fs:~r ~rerl~h~ ~he sh~k
pc~ o~ i~ taper~d ~oward ~e leE~ding edge Z1~-t~ereo~ 80
a~ ~o :Eaci~itake d~e~? ~ippi~ hrough the Uhard pa~u layer,
a~d ha~ a :Ela~eIled rear k~a~ ng end .21b to p~c~vide a
pathway i~3r :E~ esr W~L~C~ ~ill be c~e~ri~e~ ~ mare
d~:ai~ la~er~ :
: - .
he bo~tom of ~h~ t~ iB fit~e~ wit~ uita~le ~elta
8~1p~d ~oi~t 41: ha~n~ a. dow~w~r~y depre~sd a~d ~lunt
T108~ ~G f~lita~ ~ormzltioll of a de~p furrow .;Eor deep
~g the ~d wi~h ;f~ er.
.
~ ~how~ e I of ~he ~aw~g&f tb,e ~a~or
:: long,itudi~al ~he~ Z~ ularly o~ e~ h
re~p~ ~o ~ corr~ ~g lcs~itud~nal ~Ki~ of the pair
Q~ ~co~d ~ l~b.~ t~ def~e a rea~ward obtu~e a~gle
w~ch pre~e~;~ ~he. t~e w~ a lag~ angl~ of ~ack
relati~e to the ~ound.
~` :
.
~e ~er~ disc:h ~e m~:ans 23 ~:Efe~ti~ely compri~e~ a
~r boot 43 ::Eixedly ~u~ted wit~i~ the c:o~ es of
the. c~rxiage 1~ betw~en~ ner slde directly behihd ~he
: ~ . pair o$ seco~d: arm~ 17b alld t~e ~ e 21. Th~ fertiliser
d~æcharge mea~ al~o i~dude~ a fer~ili er de:f~lector pla~e
4~ mou:~lted ~ert:ically to t~e reax o~ pair o:E ~eco~d
- . .
~ ~ WO ~3t21754 ~ ~ 3 ~ 6 4 6 PCr/AU~3/00187
~ 15 ~
ar~ 17b and which extends contiguousl~ to adjoin the
tra~ g end 21b of the 3~ank of the ty~e 80 as to foxm a
pathway for falli~g fertili~er to tra~el along the rear
t~ailing e~d ~lb and deposit it~el~ into the furrow at the
traili~g end of the p~int 41 im~ediately upon it being
~ormed ~y the tyne. Accordingly, the fertiliser ~oo~ 43 i8
c~nnected to a conventio~al fertili~er delivery tube (not
show~) which iB in turn con~ected to a fer~ilise~ discharge
source mounted in a~ ocation with the travelling frame.
The seed discharge means 25 similarly compri~e~ a s~eding
boot 47 again fixedly mou~ted within the confines ~f the
carriage 15 between the inner sides thereof, but rearwardly
of the fertiliser dis~harge ~eans 23. The seed discharge
means 25 al~o includes a ~eed deflector plate 49 which
form~ part of ~a triangular ~-ghaped brack~t 51 pivotally
mounted about a transverse axi6 53 at the end of the
carriage for supportin:g the covering wheel 29. The seed
defl*ctor plate 49 incorporates a lip which protrude~ from
the bottom of the bracke~ 51 downwakdly 80 as to extend a
` ~ : :
margi~al dis~ance b*yond the ~ottom of the carriage defined
by the: skid~::3i.~ The~seed deflector plate ~9 i8 disposed
in a corre~ponding~;angular dispositio~ to th~ major
longitudLnal axi6 of~the tyne 21 80 that ~eed falling from
th~ boot 47 may~strike~t~e ~eed deflector plate 49 a~d
follow:a p~th~ther~al~ng to be~depo~ited i~to the furrow at
a loc~ ion re~rward~y spaced ~rom th~ corre~ponding
posi~ion of the ty~e at that instant. Thi rearward
E~acing between the deflec~or plate 49 a~d the rear
trailing end ~1~ o~ the t~e iB ~uffici~nt to allow parti~l
aoveri~g of the fertiliser depos:i~ed into the bottom of the
furrow by the en~ o~ the d~fl~ctor plate 49 ~o that the
~eed may be deposited at a marginally higher position
within th~ furrow, there~y achieving deep banding of the
seed.
WO93~21754 ~ 1 3 ~ 6 ~ 6 ~/~
-- ~6 --
.. . .
wit~ ~e ~e~iliEIer ~c~arge me~r ~e ~eed~g boot 4?
oi~ the ~e~d ~fi~harqe mea~ 25 ~!~ co~ec~ted to ~ ~eed
~le~ rery tube ~I~,Q~ how~ w~ich i~ tllrn i8 l:oD~ec~d t~ a
~ee~ disch~rg~ sou~ ot B~lOW~l~ al80 u~ted ir~
as.~c~cia~ion .Tith the tr~v~ g frame.
T}~ triaD~ular brac:ket 51 ~ pi~otall~ molm~ed to the
carriage abou~ the. tran~verse pi~rotsl a~i~ 5~ w~ic~
di~po~ed :~ear~ardl~ d ~oward;s t~e ~op of . the carriage
etw~en the i~0rt~1i6er boo~t 4~ a~d see~n~ boot ~i. T~Le
es of t~e bracket p~ lec~ rearwardly ~rom - the ~ar of
the c~rria~ge 15: irL para~le~paced rela~ioIlsh p to each
ot:her ~o rotata~ly &uppo~:t th~ tra:~ling ct~e~ing w~ee3: 29
at t}~ ~e~r of ~e ca~age. The c~vering whe~t 29 i~ ~uch
der~ ~e c~tt~ng wheel ig to compres~ ~he. to~ of the
$urrow and t~& ~c~o~e~the~ ion f~nned ~3y ~he cutti:clg
wl~el ~lg a~ hence~ cover the dep~ ed ~ee~ with ~oil .
The ~a~ me~s~ 2~ :compri~e~a teD;sio~ ap ing w~ich i~
~ustabl~ ted~ a~ ;o~ end 27a ~ ~ ;E?e~de~t bracke.t 55
se lr~mount:d~o~.~e~b~;~ 3 of the.~ frame and~ pi~tall~ ~
nountec~ ot~er~:~d.:betwee~; the. ~ec~d ~ 7b at a
pos~ti~3n in~erm~d~t~l~ ~disposed betweei~ the . upper ~d
lo~/er ~ds ~Q~ he ~: Beco~l arme~ The one end 27a cf the
pr~g i~: fo~d~wLth~a ~threaded~bo~t sIld whi~ recei~re~ a
~ut; w}~ch I a~ uLrned~ ad~ui~: ~b;e ~en~lon i~ ~he spri~g
e~d;end~Dg between ~t~e ~pendent~ plate ~ g5 and t~e pair oi~
con~ ~8 ~7~. ~ tl~is ma~er, rear~rar~ de:Ele~itic~ a~d
thu r~trac~lo~ f ~ t~e carriag~ from iE:s normally
presc~ibed: :o~erat~ue~ ~orkin~ ~po-~ition a~ shown i~ f~gure 1
d~awin~ oppc~d by ~he k~ he spring/
cau&~ng ~e ag.s~ly;;~o ~e~ur~ t~ ~s ~e~cri~ed operat~Ye
wor~g po~on ~ whe~: a fo~ce causi~q such retraction
p~te~ or l~. Dvercome.
Imp~rtaDl:yr the lillkaIge 17 ~cludes compensating mean~
': -
:, . . .
.
W093/21754 ~ 13 ~ G 4 6 PC~/AUg3J~Ol~
- 17 -
~ic~ c~mes into oper~io~ whe~ the carriage i3 retracted
for the p ~ ses of cleari~g an ob~tacle. ~or~oYer, the
aompen~ating me~n~ i~ formed by the cQnstruction o the
linkag~ a~ fin off~et parallel li~kage a~sembly, where~y ~he
~irst a~d s~co~d arms are oæfset from the par~llel wit~
re~pect to each other, ~s ~hown in figure 1 of the
drawings, w~en ia the normal operative working position.
Co~seg~en~ly, when the cu~ting wheel e~counter~ a~ obstacle
such as a ro~k, twig Qr ~ven hard ground, it i~ cau~ed to
lift w~ereupon the compe~8ati~g mean8 ele~ate8 ~he cuttin~
wheel from its working spatial relations~ip with th~ tyne
and the seed disch~rge means so as to clear the obstacle.
The arrangeme~t of the compen8ation mean8~ however,
~Lmultaneou~ly causes the tyne to lag this upward lifting
movement by ~ing 8~8tantially î~depende~tly ~onnected of
the carriage,~wh~reby its re~ative po ition i~ dictated by
the ~ spo~ition~of~the:pair of second a~ms 17b. The offset
parallel linkage aQs~mbly of the arms i8 ~uch that the tyne
and pair of ~econd~ arm~ 17b correspo~dingl~ move ~t a
different and~ ~retarded rate~relative to the cutting ~heel
19 and pair of~irs~; arms 17a. Conseque~tly, the tyne
subs~antially~ mai~t~ins:~ its~ prescribed opexati~e workin~
positio~ simu1ta~eou~1y~w~th the ele~atio~ ~f the cutting
wheel,~thereby~allow;m g~d~ep ripping and ~he ~eeding ~f the
furrow:to b-;completed:~all~:the:;way along ~he inc~sion made
by: ~he :cutting;:~ wheel 19 at a~con~tant maximal dep~h e~e~
though thexe may;;~be~ ~fluctuativns in the depth of the
: :
ncisi~n caused by o~stacles encou~tered by the cutting
' wheel.
otwithstandi~g~this,:however, when a majar ob~truction i~
,,
encountered b~: the~;:cutting wh~el cau~ing it to li~t
: significantly a~d di6engag~ ~rom khe ~round, the linkage
as:sembly will come~into operation cau~ing the ~ne to lift
entirely f~m :engagement with the ground as in a
~onventional st~mp jump mechanism so a~ to a~id permanent
:
W~3/21754 ;~ i 3 ~ 6 4 6 PCIl~U~3l~18
. 18 --
.
dam~ge l~e:~ng c:~u~ed to t~e t~ by- ~:he ob~t~cl~.
~ar~hermo~e, osc:e the t~e comme~c~e~ ~if~cant rear~ar~l
mo~reme~t, it ~ ?ve bo1;~ rear~ tg a~d upwardl~r quicl~y
to di~engage from ~;he gr~u~d.
~ .
Th~s, tb;e ~:ompenE;at~g m~ i8 c}~aracterised by two
i~pc~xta~t i~atu~e~, o~ ~g tIlat the ~e mc~eme~t i~
dampe~ed s~ ca:~tly With m~o~ f~.uc~uations in the
height ai~ ~:he cutting w~el 80 as to effec~ively op~rate
independe~y o~ tb~ ~;eigh~ o~ cuttinS~ wheel dur:Lng
mi~o~ f~lIctuatlons.in ~e ~e~;gh~ o: the cuttinç~ whee~ ~u~
wi11 rapidly r~ra~t rom ~he grQurd.uE~o~ the c~t~ins w~eel
co~t~uin~ ele~ratlo~ beyond; a prescr~bed threshold ~ight
d~t~ed J~ ~he par~llel o~f~et ~o av~id major o~stac~le~.
:
Now de~;crThi~g t~e~ method of seeding a crop whic~ can be.
achi ed. usin~ the ~8~ dascrihed iT~ the present
embodiment,: initia~ y~; a~ i on i~ continuous3~ cut
~hrough t~;e ~surfac~. of t~e gEo~ f~r a deep ripping
im~lement :to ~i~o~o~. q~he grou~d. i8 ~hen ~ inuo1lsl;y
ripped deep~ly~a1on~:1~e illCi8iC~Il to iEorm a n~rrow f ~ ro~
belo~ t~e surface~f: t~e grou~ :for ~ep~&i~in~ ~ee~,
whereby :the :: deep- ripping caufle~ mi~Lmal $urface
di~tur'oanc~. ~Fer~ili8er. i~ ~ then c~ntinuou~ly depo~ited
tQ the narrow~urro~:imme ately upo~ i~ be ~ g formed and
co~ered. :See-d~ then~ contLnuously dep~si~ed in~o ~he
narrow f~rrow:at;~a~de~t~ whi~h iQ margi~a~ly ~igher than
$ert~ e~, an~ finally is eontinNously covered o~e~ ~o
deeply b~nd t~ e~d~ -
,
.
: T~e deep rlppi~g, fertili~e~ an~ ~ed depo~iting and
; :coYe~in~: are~ ~a~l per onme~ ~ontinuou~1y alo~g the ~nt1re
lon~i~ud~al exten~ of ~he i~isio~ ~n t~ dire~tion ~f the
~Reedi~g opera~on- and at a sub~tan~i~lly co~stant depth
which iE largely~independe~ of ~he depth ~ the inci~ion
~t lea~ during ~he tLme that t~e c~tting of the inGi~ion
:
; WO 9~/217S4 2 ~ 3 ~ ~ ~1 6 PCIlAU~3/~1~7
-- 19 --
i~ a~usec~ to temporarily fluc1:uate in depth due to mint~
ob~ta~:slas or o~truction~ b~ing ~3nc:0untered duri~g t~e
cuttiIlg operation. Furthermore, the daap ripping,
depositi~g ~f $or~iliser and seed ~nd covering i~ rapidly
cea~d upon encouIltering a major obstac:le dur~g the
cutting, after the entlre longitudi~al exte~t of ~he
inci~ion i~ deeply rippe~d, deposited wit~ se~sd alld co~ered.
:
The second e~bodiment iB differen~ ~rom the ~ir~t
~odiment in many re~pe~ts and will be de~cribed with
reference to fi~res: 5 through to 15. Moreover, the second
embodiment i6 d~:rect~d toward~ a seeding i~lement assembly
111 which i~ su~pendedly mounted to a fixed bar 113
arranged ~la~ly wi~h re pect to a travelling rame a~ in
:~ the first embodiment. ~: The assem~l~ 111 however, di~pen6~3s
with the use of a carriage, a cutting wheel and a trailing
~: covering w~,eel; ~ut ma~ntains a:~ linkage 117 comprisi~g a
pair o irst arms 117a~and~a pair of ~econd arms 117~, a
dsep rip~i~g ty~ 121, a :f:ertili~er discharge means 123, a
seed di6~harge means 125 and biasing means 127. I~tead of
a ground engaging cu~ing wheel, the as~embly i~Gludes a
ground ~clltting m~an~ in ~ the fo~ o a nose -p~ n 119
whic~ projects~ e~riorIy from ~he :fron~ of t~- tyne 121
for cuttirls~ :through: the ground,~ ~;and ~in~tead t~f the t~ailing
:coverinçl wheel~,~ the~as~embly i~cludes a co~reri~g means in
u~m of a ~pa`ir~of coverin~ ~oil defl~ctor plate~ lZ~.
P~dditional to the a88~ Ibly of the fir6t embodiment, the
:afise~ly 111~include~ a furrowi~g mea~s irl the ~onn of a
pair of furr~wing:soil deflector plate~ 115.
The ~08e 119 iQ planar ~a~d is pxo~ided w th a leadin~
rectilinear cutting edge whi~h in the prescribed operative
~: workiTlg posi~ior~ as ~hown in figure 5 of the drawings, i~
sloped r~arwardly from the hottom 131a to the top 131b.
The nose 119: projects anteriorly from the tyne ~uite
.
~ ~ 3 ~ 6
WO93/~17S4 . . P~r/~U~3/00187
~ a~ 8}IOWirl ~ t~e dra!lw~g~ a~d ~ a. ~onse~ ce
of bei~g :E~rml3d GiE re~i~ly tb~ t~rial, or examl?lQ,
. ~ix mill~metr~3 thic~s~ s:teel piater 1:~1& ~088 C~ CUt
thr~ugh ~ ~olmd c~eatillg a requ~te i~ci~ jusl: a~
efec~ as ca~ a c:u~ti~s~ w~eel a~ a~e i~ the
~ odim~t. I~deedt a~ th~ n~s~e 11~ ~xte~d~ a~l the
W~ ong th~ ~rQ~: o:E t~e ~e 121/. ri~b~ d~n to t~e
bott~m of ~. tyne~ a, d~aper illc~sio~ i~ cre~ed tha~ i8
t~ ca~ wi~;h the cutting wl~el~
~ ted i~ the draw~llgs, th~ top i19a ~d bottom llgb of
the n~ po-rtio~ ar~ s~re~g~hened by bei~sl formed of
margi~ally t~;~cl~er ste.el plate, e;g. 16 ~nillime~res. The
~108e por~îo~ 119 i~ p~v-~3d with & }:~ot~o~ e~e ll9c which
project~ exl~ly ~ a the bo~t;o~ o~ the ~e a~d i~
d~pos0d i~: a: Bu~t~lltiall~ horizonta~ pl~ne w~en iIl th~
pr~Gribed ~p~ati~re ~rking po ion a~d ~hus i~t~ec~
Uith t~ }~ad~ dge 131 at ~ a~ t~ ~g}e ~a ~g tO :EC~rm a
1~a~$ POi~t ~: ~e bQt~Om 131
Eac~ ta~eC ~Utt~9: i~hrOU
~:O~U~C~IO:a With the ~@ar~r~ 1QE~, a3~19WS ~e ~8~eIab~Y tO
pas~ ~ou~ ~tUbb1e: a~l Q~er S~e ina~eE~a~ W1~0U~
~ ~ musjor blo~l~as~3s. ~ e:~ctr~e~u~ B~r~ace mater~-a~ t~rld~ t~
ed :Ere~ rc;k t~e gro~ e~ ~ t~ w ar~und
frQ~t. ~ ~h~ ty~er a~ g t~e l~kelihood s:~ it beillg
pressed i~o ~ grouIld ~er~ ~t e~ r~t a~ fec~
ge~ tioIl, a ~roblem e~c~ r~: w~:h ~h~ us~ of c:u~tlng
a~ p3;~ wheal~. kddi~ona~ , loo~ acles ca~ fl~w
pa~ ~he ~yrle i~ a; ~im~l~r :~[a~er wi~;hQ~au~ ng ur~ e
lift~g o:E ~he ~ y, a proE~ h ~he u~;e o:E
wheels whi~ te~i ~a ro~l o~r~r ob~t;a~les~u~h as tump~
:aUsi~a ~due ~ ~g~
The li~ka~e 117 ~s subs~antially sim~l~r to tl~e li~kag~ o:E
t~e fir~ d;-~me~ except that the pair ~ fir~t arms
117a are pi~tally mounted at th~ir lower ends ~o eit~er
W0~3~17S4 ~ 1 3 -~ 6 Q 6 PCT/AU~3~001X7
- 21 -
side of the front part of the top 119a of t~e no~e po~tio~
1~9, instead of to the carriage and cutting whee1 as in the
~irst embod~ment. In addition, both the first ~rm8 117a
a~ seco~d axms 117b ~re respective1y outwar~ly curved as
shown i~ ~igures 5 and 6 of the drawingg. This curvature
i8 important to:maximise the elevation tha~ can be achieved
from lifting ~f the ~6embly w~th respect to the fixed bar
113, enab1in~ the relat~e angular po~itio~ of ~he ty~e lZ1
to be altered and be maintained in it~ altered po~ion to
mitigate ~he lifti~g effect of the deep ripping cau~ed by
it, as it approaches :~he maxima1 elevated po~ition, a6
hown parti~ularly in fi ~ re 6 of $h~ drawing
Impor~ntly~ the off-set para1lel linkage arrangement of
the arm~ which form the co~pensating means i8 maintainedr
wher~by the ~pacing between the:pivota1 axes of the upper
end~: of ~he fir6t ~d se~ond arms i8 ma~ginally greater
than the ~pacing~:betwee~ the:p~votal:axes of the lower ends
of the f; r t and second 8rm8 . In a typical example of t~e
pre~e~t embodiment, this ~pacinq:b~tw~en the upper ends iB
approximately 9~25 :~nches~and ~the corresponding ~pBCi~g
batween:the lowe~ end~ i8 8.875 in~hes.
The:bia ing~mea~s~lZ7~again i8 ma~ginally dif~rent ~o the
iasing ~mean~ adopte~:in:thè~first~embodiment. ~oreov~r,
the~bia~ing mea~s~l27 comprises~two~te~ion spring~, 127a
~nd~ 7b~ w~ich~: are respectively co~nected to the pa~r of
first arm6~1l7a~ d::the~:pair of ~econd axms 1~7b, as shown
in figure 1 of ~ the: drawings. ~otwith~ta~ding the plurality
of ~ension 6pr~ng~:invoIved in the second embodLmen~, the
iasing ~ef ect:of:the6:~:Qpring6~:0n thé linkage a~rangement
in~bia~ing~ thé~ ty~e~ 121:~int~ the pre~cribed workins~
po6i~ion,: i8 préci6ely: the ~6ame a6 the biaæirlg means of the
firs~ embodiment.
:
:~ : The main body of the tyne~ 121 as :opp~sad to the fir~t
: embodiment, iæ not:integrally formed with the second arms
~; :
~: :
WO 93l21754 ;~ 1 3 ~ 6 !1 6 P~/~U~0~187
--- ~2 --
~17b. t~ e~e~t}~ re~:t~ve ~gul~ po~it,~on of the
~e 12~ i~ allow~ o a~;~er with re~p~ o ch~:ges in ~e
ahg~lar po~i~on~g .~ ~e pai~ o:E s~aond: ~rms 117~,
enabling a d~ffere~ ~g effa~t or~ i:he t~e ~o be }.
ach~ eveid ~ha~; iff ~ ca~e in ~e ~irs~ enibodi~ent .
M~reo~e~, ~he t~ei i21 ~ Arly pro~d~:d w~h a deep
r~pp~n~ point 14 at the }ra~e ~her~a:E whic~ i~
a~tia~ plaz~r, del~a shap~d an~ ~o~ed, as :i.8
~he ca~e in the ff:rs~ odiment,. :~owever ~he angu~ar
po~itioniIlg ~ thi~ nt during elevatio~ o~ the a~se~ibly
wit~ re&pec~t ~ the ~$ia~ed bar 113, is oppo~ite to tha~
achie~e~ l~e ~ s~ e~odin~ent~ Tha~ lS, due ~ the
~ela~iv~-pi~oti~g ~etween t~:e palr Qf sec:oIld anrls ll7b and
t~e ~e 121t the; ç~eneral pra~e of the po;ln~ ~:41 16 brou~ht
rom a~ ~itia~:a~;aclci~ig~angle with.re~?~ct ~o the ground,
as ~i~ show~ fi~u~ 5 o: t~ -~aWl~lg~;t w~:en i~ ~he
pre~ 3per~t v~ ~or ~ng pO8i~tiQTI as ~ xeq~ixed: for
~ep rip~i$gr~ to;~ 8tlb8t;~ti~Lly parallel. pG~it~on wit~
re p~ to ~ gro~ a ~e a88~bL~ ; eleva~ed as i8
8h~ ~ ig~re~ 6~ o ~t~e drawinç~ ~lU~r a .t~ tyn~ 121
progr~ vely ~}evat~sr tke~ lif~ing ~ec~ on ~oi~ callsed
by the ~in;~ 1;41 red~ ~ ~e~rs ~e ~ur~ac~ ~f ~e
grou~, ~ena~ g~ po~ ~ be ~i~ted i~rom QU~; of ~h~
grou~d, ~`min~g~ oil~ turbance a~ ~he s~rface ~;d
tig~t~g~:t~e ~ f~ ~: ~y ~derl~ing ~lay to ~he
a~:e~ : :
Thu~ ~IE a resul~ :~f ~he off--set li~ age a~ra~ngeme~, the
ro~ o: ~h~ ~e~ i~ t~1:ed ma~ }a~ly up~rard~y rela~ive to
he rear of the ~ne, ~&~mu~ eously ~;th the eleva~ion o$
tyne as :4 ~e~ arraDgement al~o enhances ~he h
r2pid c~ear~ae- a~ he ~:u~inS~ ~aEe from t~e grau~d ~hen
enco~ter~çr ~ ~IImnovs}~le o~sta~le.
., . ~ .
t s-~oul:d be ~o~ed ~ ~h~ nose portion 119 i5 di~;pC)~;ed
co~tiS~uously with ~he front of the rippin~ point 141 and
WO 93/21754 ~ 1 3 ~ B ~ 6 PCr/~U93/-00187
con~ ly ~rith t~e r~ulta~ ty~e, there i~ no l~adi~g
c~tchi~ edge or f~ce, a~ i8 in the cass o~ a normal
~d point ~oIIfiguratio~ on which ~tubble ~an aeclLmula~3
~d catch, making it dl fic~llt to remove withollt manual
effort. ~oreover, due to there being ~o ca~ching ed~e or
~ce, any stubble a~cumulated at the leading edge oT th~
no~e portic~n can 8illlply d:rop and fall away from ~he tyne by
el~v~ting it from the ~ro~nd and ~haki~g it if ne~es~
I)ue to ~h~ forward: projeetion of c:~nve~tional tynes and
poi~t~, removal of the aee~ulated ~tu~ble ~anno~ be
ae~ieved ~o ea~ily, due to ~he faet that the forward
pro~etion of the poi~t provides à retaining surface on
whieh the stubbl,e is preve~ted from ~;imply sliding off the
. t~3, even whe~ it i8 lif d free from the gro~d.
It ~hould al80 be noted that the eeIltral l~catio~ of the
rippi~g po~nt with re~p~3~t to the ro~t and re~r of the
~e ~ a whole ha~ the advant~geous effee~ of l~s~eni~g
e ~ide draft fcsrel3 up~ ~he frame wh~n t~xIIing.
The furrowi~g mea~s ~ a~d eo~reri~g mea~ are î~egrally
f~rmed: i~ a add~e ~llaped braelcet arrans~ement ~ich iR
fixedly attaehed at ~the sides of th~ main body o~ th~ t~ne
12~: to e~nd re~ardly the~r~m by ~uitab~e meanE sueh
a~ ~eld,ins~ a~d pin~:L~g provided by the pîD~ 13~. A coyBr
plate 1:35 ~u~:mo~ts at th~ pair:of ~urrowîllg ~oil deflector
pla~es 1}5 80 th~t:~he plate~ lIS effec~i~rely depend f~o~q
th~ cov~r plate 135 i~ a 8tlb. tantîally upright pobi~ n
wheIl in the pre~cribed operatîve working pO~itiOIl., The
furrowîng soîl defl~ctor plates ~ llS ar~ substa~tîally
pl~ar and wi~ged shape~d, ~eing oppositely a~gled to
: . proiect ou~ l~terall~ from eith~r ~ide o~ the ty~e. II1
t~is manner, they are a~le to engage the ground behînd the
tyne a~d def ~ ect 80il la~rally either side of the tyne to
form a pair of discrete furrows 1~1 for the ~eed. Th~
lower most ends 115a of the plates are di~po~ed at a level
~ ~ .
.
~VO 93/~1754 ~ ~i 3 4 6 4 6 P~r/A~193~00187
. -- 2,4 --
a~o~ 1~ po~ ç~ t;h~ p~i~t 141 ~ a~ ~eii dept~ of
Etl~0~8 il~ s~fic~y 1~88 t,~Ea~ ~e deipth o~ the
~:ci~ion ~:rme~ he ~e.
. . . . . .
. ~ 8
T~e cov~ri~g ~oi~ defl~c~or plates 129 ~re ~tegra~ly
Eormed with che coYer plate 135r esgen~forming a pair
of t~il~ w~g w~i~ pro~ect r~ar~ardly 3~n,d o~liquely
;~ ~: f~om ~e e~ o ~ a~e~1y. The cover~ oi~ def~ector
~: ~ : pla~es 129 are~ al80 su~taD.~iall~ planar and of triangular sb:ape, ~eing d~ipos~d n ~ignment directl~ behind the
.
re~sp~ic~ive fu~ro~ng soil ~eflector pl~es 115 so as to
engagl3 t~e ~soil~: a~ the ou~side of ~he re~pect~re ~urrows
151 a~d def~e~: ~e E~a~ne lateraIly acX088 ~he f~rrows,
/ardly ~ to. :~ the~ :o~her: ~ide Q~ the :E~oW5. The ~hape o~
the def~ector~p1a~es 1.9: ~orm a .ce~tral passage directly
:aligned with~:the~ rear ~of t~e tyne,~ wh~c~ pa88~e iB an
inverte~ hape~ on~èque~tly,~th~ deflector:.pla~e~ 129
:with tb~:s~il deflecte~acrQss ~o ~he~ln~;de o-~ the furrow~
151 s~pe th~:sq~l between~t~ two~urrow~ i~ta a ce~tral
ridge ~5~ a~ ~an~ best~een;~ igure ~5~
:Th~: coYer ~p1a~e~ 5~ ormed with a plura~ity ~f
:aperture~, two~ of~ ~h~se~ aperture 137 accomm~ate
fertiliser~:~bo~s~ l43~w~lc~ :~f~rm~p~r~ o~ ~he f~ r
disch~rge;~ea~ a~d~two;~of~t~e~aperture~. 13~ a~commoda~e
eed~oo~ 47~w~1ch:~or~pa~t~o~ t~e see~ disch ~ e ~ea~.
The two fer~ er:: ~perture~ an~. ~oo~s ~re di~posed
ceD~rall~in~a~er~es~ me~ia~ely be~L~d t~e- re~r Qf the
tyne~ a~d~ar~con~ec~ed ~o fe~iliser ~e~ivery ~ubes 14g
o deposit ~ liser. lSS: from~ a~ fertiliser dis~harge
source, beh~nd:~he t~ an~ i~to ~ke:~ottom of the incisivn
formed behind ~he~deep~ripping point l41. -
,
Th~ seed apertures and boot~ are dispo~ed xearwar~ly of the
fertili~er aperture6:a~d ~oots, but are di~poged latera1ly
. :
WO931217~ 3 ~ 6 4 6 P~/A~3/001~7
-- 25 --
~ith respect t~ either side of the ce~ltre lin~ :Eorm~d by
the ~y~e a~d ~he fertiliser ap~r~ure~ and boot~ d
~teriorly with re~p~ct to the coveri~g mea~s~ q~he s~ed
apertures a~d ~ot~ are precisely positioned ~o that s~ed
157 delive~ed thereto from a seed di~charge souxt:e via
re~pec~i~e ~sed. deli~rery tube~ 151 is.depQsited directly
into ea~:~ furrow. 151 i~ediately after 80il i8 deflec~ed to
th~ outside b~ the furrowi~g mean6 formi~g th~ ~urrclw a~d
prior to th~ 80il being deflected back to the în~ide by the
coverin~ mean~.
A erti1iser deflector plate 145 i8 fi~cedly attached to the
under~ide of the coYer plate 135 to depend therefrom
betwean t~e ~e~tili~er aperture~ and boots and the seed
apertures and boots~ 80 aB to partition discharged
ferti1is2r from ~d~scharged~eed~ Thi~ de~lector plat~ is
centra1}y disposed :a~d: project~ anterior1y to deflect
fert~ er: 155~ anterIor}y toward~ the rear a~ the tyne 80
that~it may~be depQ~sited~at the ~botto~ of the inci~ion
created by::~he tyne~prior to this being covered ~y 80il a~
a co~sequence ~f the ~ubsequent furrow formation and
overi~g. :
Now~::de~cribing :~the~ method ~y w~i~h ~aeding of a crop i~
achievedj using the~ seeding imp1ement assemb1y of the
se~ond~e~bodiment,~the:tr~vell~ng frame is 8~t Up 80 t~at a
ba~k of seeding Lmp1e~0nt a~emb1ies:~are~provided which are
spaced ap~rt 1~terally a~ optim ~ di~t~e to promote
atooling, ~or example~, in some soil typ~/ 14 i~che~ apart.
The~fe~ti1iser ~and.~eed~:discharge~mea~s of the a~se~b1ie~
are re pecti ly~co~ected via ferti1i~er and ~eed delivery
tub~ to fertili~:er~ and ~ 6eed discharge ~ource~ a~d the
travelling ~ame is~draw~ by a prime mover along a paddock
to be ~own, ~with the :a~semblie~ being brought into
engagement at a prescri~ed working positi~n with re~pect ~o
the gr~und.
wo 93J21754 2 13 Ll 6 4 6 PcrlA~3!aol8
-- 26:-- .
-
Ti4~ cu~g ~ea~ oiE ~ac:h ~ssem~ conti~uou~y ~Ut;8 2!tIli~c:isio~L ~hroug3h ~ surfat:e o~ ~he grou~d ~hrollgh which
the l:~e cQns~it~g ~he deep rippin~ ~leme~t ca~
i~ollow~, The. t~D,e CO~lt;l~UOUB3~ deep rip~ the grou~d al~s~g
the iDlci~io~ b~ v~u~ o~ ~he dieep ripping point being
ai~po~ed at aD; appropri~e a~gle of atta-::k wi~;h re~pect to
the . groun~ bRlow the :6tLr~a~e~ The ~arrow extent of the
cu~g mea~s aIl~t.t~e and ~he con~e~uent ~cigion ~a~ i~
ormed en~les deep ripp~Ilg to ~ccur with minimal su~face
disturbance.
. ~ ~
h~ ~ertil~er ~ means -con~i~uo~sly deposits
fextl~er pro~ate to the ~o~tom of the i~ci~ion
~ed;ia~el~ upQn:~he deep r~.pping. of the gro~d by the t~e
so hat ~er~ isex i& disposed ~ce~rtrally of th~ row a~
maximuDL depth. S~ltaneously, ~he furrowi~s mea~s forms
two urrows :e~er:~ 8~ of t~e ~nc~ n at a relatively
close sp~cing,~ for ~ple 4-6 ;i~che~ apa~, an~ at a muc~
Bha~lower ~ep~: t~ .~he~ i~ci~io~. ~he ~eed di~charge
meanfl-su~iequent~F a~d co~tinuou~}y depc~ seed i~o ~he
furro~ w~ the~.are i~Dsdiately co~e-r~ t~ ~er~ng
mean~de~Lect1nq~oil~on~the~;out~Ld~ o~ ~he respecti~e
furrQws, no~: only :~CrOSfi ~he~ furr~s, but ~i~o ~o the
o~ntrer concentratLng~the 60iL ~o ~as ~ form a central
ridge wh~c~remains after the pa~age of the implemen~
grm md~ pr~fi~ is~oDseque ~ ly ~chleved as shown in
:figure 15i w~ere ~he seed; i& deep banded ~ ~h fertiliser.
Signi~ica~t~ the;;one li~e of.fertili~ex provide6 adequate
nu~r~e~ : to t~ two ~i~es ~$ ~eed Wl~n a row. Thi not
o~ly DU~C~mi6e~ the~effe~t of ~he ~erti~er use~, but also
reduce~ t~e proport}onai amou~t o~.ertil~er ~equire~ for
he s-ed~ T~u~ a seed to fertilise~ ratio 'n ~he ord~r o~
2:1 ca~ b~ ach~eved~: Furthermoret greater ~acing between
the r~wg can be achleved ~hll~t main~aining yield, a
: . . . .
W~ 93/217~ L 3 `~. 6 ~ ~ pcr~Au93Jaol87
~ 27 ~
coroll~ r of whi~:h i~ improve~ ~tooli~g. ~dditio~ally, th~3
rema~illg ca~tral ridge chan~els wat~r re~ult~ ~rom
precipita~ion i~to th~ coYer~d furrow~, whic~
particul~rly ~d~tageous in non-wetting 80il~.
.
Importantly, whil~t ~he a88eIDbly i8 operational, o}:~tacles
~ausing sQme impedim~nt to the ~orward movement of the
a~ly will :Eorce the assembly rear~rdly agai~st the
tensio~ provided by the b~a~i~g means. The par~llel
li~kage arr~g~ment translates this retardation into an
elevation of ~h~ as~embly with re~peet ~o the fix2d bar o
the travelling frame and by virtu~ of the off-se~ p~rall~l
arm~, eau~eg the fro~ of the tyne to ele~a~e more quic~ly
than the rear of the tyne deer2asi~g the angle of a~aek oP
the poi~* t~ereby mitig~ting the lif~ing effect and the
deep rippi~ eaused by the tyne as the point move~ towards
the Eurf~e~. Cons~quently, mi~imal ~urf~ee distur~a~e i8
eaused miti~ting~he lifti~g of a~y u~derlying ~lay or the.
e, Impr~vi~eonserv~tion of the 80il . ~
It sho~ld be appreciated tha~ the ~cope of the p~e~t
iI~veTltion i8 not limited to the partieular embo~lLm~nts
here~ d,e~r~ed. In pa~ticular, ~it ~hould be apprecia~sd
;hat nc~tw~th~tarlding~ the ~a~t that ~he seediIlg m~t~od and
p~ g sy~t~n haYe ~ been describ~d wi~hin t~ ~pe~i~îc
~od~m~tlts di~ected~ t oward the see~ ~mplemen~
assembly, ~hey ~ollethel~ co~stit~te independe~t forms o~
the in~e~ti~D..
In addition~ C~4Ilg~8 i~ accordance wit~ con~tional design
practice ~an be mad~ t~ the æpecific d~sig~ of the ~eedi~g
Lmplement a~s2mbly to allow the compe~sating mean~ itQ
i~ tion in ~l~e ~ame ~ a Eimilar manner as provided by ~he
of~set parallel lin~age assembly of the li~kage a~
without ~ecessarily utilisi~g ~he precise de8ign described
herein.
